forked from: flash on 2011-10-14

/**
 * Copyright bradsedito ( http://wonderfl.net/user/bradsedito )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/dE7h
 */

// forked from christian's flash on 2011-10-14
package
{
    import flash.system.*;
    import flash.events.*;

    import flash.net.*;
    import flash.display.*;

    import flash.text.TextField;

    import flash.filters.BevelFilter;

    import flash.media.Sound;
    import flash.media.SoundChannel;
    import flash.media.SoundTransform;
    import flash.media.SoundLoaderContext;

/*
    import flash.net.URLRequest;

    public  var _liveVFX : LiveVFX;
    public  var URL : String = 'Smoke.swf';

    _liveVFX.load (new URLRequest( URL ), new LoaderContext( false ));


*/
    

    public class PAN_1_TEST extends Sprite
    {
        public  var URL : String = 'Smoke.swf';
        private var ldr:Loader = new Loader();
        private var _swf:Sprite = new Sprite();
//      private var URL : String = 'http://mm4d.free.fr/tracks/breaks/sample_a.mp3';

        private var W : Number, H : Number;

        private var trans : SoundTransform;
        private var chans : SoundChannel;
        priv        public  var URL_LOADER:URLLoader = new URLLoader;
ate var sound : Sound;
        
        
        public  var _liveVFX : LiveVFX; 

        //

        private var controller : Sprite;
        
        private var output : TextField;


        public function PAN_1_TEST ()
        {
            Wonderfl.disable_capture ();

            stage ? init () : addEventListener (Event.ADDED_TO_STAGE, init);
        }

        private function init (e : Event = null) : void
        {
                    addChild( _swf );
        _swf.addChild(ldr);
        ldr.load(URL);

            
            if (hasEventListener (Event.ADDED_TO_STAGE))
            {
                removeEventListener (Event.ADDED_TO_STAGE, init);
            }

            H = stage.stageHeight / 2;
            W = stage.stageWidth  / 2;
            
            //
            
            addChild (output = new TextField ());
            output.autoSize = 'left';

            addChild (controller = new Sprite ());
            controller.graphics.lineStyle (1, 0x333333, 1);
            controller.graphics.beginFill (0x666666, 1);
            controller.graphics.drawCircle (0, 0, 10);
            controller.filters = [new BevelFilter ()];
            controller.buttonMode = true;
            controller.x = W;
            controller.y = H;

            controller.addEventListener (MouseEvent.MOUSE_DOWN, onDrag);
            controller.addEventListener (MouseEvent.MOUSE_UP  , onDrag);

            //

            sound = new Sound ();

            sound.addEventListener
            (
                Event.COMPLETE, setPlay
            );
            sound.addEventListener
            (
                IOErrorEvent.IO_ERROR, onIOError
            );
            sound.addEventListener
            (
                SecurityErrorEvent.SECURITY_ERROR, onSecurityError
            );
/*
            sound.addEventListener (Event.ID3, onID3);

            sound.addEventListener
            (
                SampleDataEvent.SAMPLE_DATA, setSampleData
            );
*/
            sound.load (new URLRequest (URL), new SoundLoaderContext (1000, false));

            //
            
//                _liveVFX.load (new URLRequest (URL), new LoaderContext( false ) );  //  LoaderContext( 1000,false ) );
            
            //

            chans = new SoundChannel ();

            trans = new SoundTransform (1, 0);
        }

        private function setPlay (e : Event) : void
        {
            chans = sound.play (0, 1000);

            setChannels ();

            stage.addEventListener (Event.ENTER_FRAME, setPanning);
        }

        private function setPanning (e : Event) : void
        {
            graphics.clear ()
            graphics.lineStyle (1, 0x333333);
            graphics.moveTo (W, H);
            graphics.lineTo (controller.x, controller.y);
            
            //

            var L : Number = 1 - Math.abs ((controller.x - W) / W);
            var R : Number = 1 - Math.abs ((controller.y - H) / H);

            setChannels (L, L, R, R);

            //

            output.text = 'PAN IN LL / LR  |  ' + L.toFixed (2) + '  | RR / RL  |  ' + R.toFixed (2);
        }

        private function setChannels
        (
            LTL : Number = 1, LTR : Number = 0, RTR : Number = 1, RTL : Number = 0
        ) : void
        {
            trans.leftToLeft   = LTL;
            trans.leftToRight  = LTR;
            trans.rightToRight = RTR;
            trans.rightToLeft  = RTL;

            chans.soundTransform = trans;
        }
/*
        private function onID3 (e : Event) : void {}

        private function setSampleData (event : SampleDataEvent) : void { }
*/
        // --o ERROR HANDLING

        private function onIOError (e : IOErrorEvent) : void {}
        
        private function onSecurityError (e : SecurityErrorEvent) : void {}
        
        //
        
        private function onDrag (e : MouseEvent) : void
        {
            controller[(e.type == 'mouseUp' ? 'stopDrag' : 'startDrag')]();
        }
    }
}